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VulnerabilityPublished Updated

CVE-2026-90250: Linux kernel · bpf, cgroup: Fix storage null-ptr-deref after replacing prog

Source GCVE Database

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Authoritative record:CVE-2026-90250· High

Not known to be exploited · fixed in a033c950f6731be88a7da98604ed78f302f15b80 : patch Linux kernel soon.

Data as of 30 Oct 2026, 18:33 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in a033c950f6731be88a7da98604ed78f302f15b80, 85785e7e2ebddcaa5c3b31bd3bcd83ae648985d4, 16c8321ee40c420f8e02e09515a5126682ddf4ea +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab, < a033c950f6731be88a7da98604ed78f302f15b80
Fixed in
  • a033c950f6731be88a7da98604ed78f302f15b80
LinuxLinuxAffected
  • ≥ 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab, < 85785e7e2ebddcaa5c3b31bd3bcd83ae648985d4
Fixed in
  • 85785e7e2ebddcaa5c3b31bd3bcd83ae648985d4
LinuxLinuxAffected
  • ≥ 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab, < 16c8321ee40c420f8e02e09515a5126682ddf4ea
Fixed in
  • 16c8321ee40c420f8e02e09515a5126682ddf4ea
LinuxLinuxAffected
  • ≥ 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab, < 12feca126831556dc7fabe5a3ba28fbd328768b6
Fixed in
  • 12feca126831556dc7fabe5a3ba28fbd328768b6
LinuxLinuxAffected
  • ≥ 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab, < 3f562c537e9ecf4bc5e206cfffc2cc047f1b7e94
Fixed in
  • 3f562c537e9ecf4bc5e206cfffc2cc047f1b7e94
LinuxLinuxAffected
  • ≥ 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab, < 1ab3da12061d7ccb099f7e925fa2d865967a316a
Fixed in
  • 1ab3da12061d7ccb099f7e925fa2d865967a316a

AI-suggested

The vulnerability has been fixed in the Linux kernel by rejecting incompatible BPF program replacements that would cause uninitialized cgroup storage. Users should apply the official kernel updates that include this fix.

Description

A null pointer dereference vulnerability in the Linux kernel's BPF cgroup storage handling was fixed. The issue occurred when replacing an attached BPF program with another that uses per-CPU cgroup storage, leading to uninitialized storage and a kernel panic.

References

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